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13904901 = 322935273
BaseRepresentation
bin110101000010…
…110000000101
3222011102221100
4311002300011
512024424101
61214010313
7226122033
oct65026005
928142840
1013904901
117937a5a
1247a6999
132b5b06a
141bbd553
151349e86
hexd42c05

13904901 has 12 divisors (see below), whose sum is σ = 20157228. Its totient is φ = 9236544.

The previous prime is 13904893. The next prime is 13904909. The reversal of 13904901 is 10940931.

13904901 is a nontrivial binomial coefficient, being equal to C(5274, 2).

It is an interprime number because it is at equal distance from previous prime (13904893) and next prime (13904909).

It can be written as a sum of positive squares in 2 ways, for example, as 10556001 + 3348900 = 3249^2 + 1830^2 .

It is not a de Polignac number, because 13904901 - 23 = 13904893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13904909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1 + ... + 5273.

It is an arithmetic number, because the mean of its divisors is an integer number (1679769).

Almost surely, 213904901 is an apocalyptic number.

13904901 is the 5273-rd triangular number and also the 2637-th hexagonal number.

It is an amenable number.

13904901 is a deficient number, since it is larger than the sum of its proper divisors (6252327).

13904901 is a wasteful number, since it uses less digits than its factorization.

13904901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572 (or 5569 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13904901 is about 3728.9275938264. The cubic root of 13904901 is about 240.4672667504.

The spelling of 13904901 in words is "thirteen million, nine hundred four thousand, nine hundred one".

Divisors: 1 3 9 293 879 2637 5273 15819 47457 1544989 4634967 13904901